TY  - BOOK
AU  - Gulland, J  A
TI  - Fish stock assessment:  a manual basic methods
SN  - 041900273
AV  - SH 331.5 .S74G85 
PY  - 1983///
CY  - New York
PB  -  John wiley & sons
KW  - Fishery Management
ER  -